agreement no ce 65/2013 (ep) post-construction … · 2016-09-09 · file:...

Issue No. : Issue 1

Issue Date : May 2016

Project No. : 1266

AGREEMENT NO. CE 65/2013 (EP)

POST-CONSTRUCTION ECOLOGICAL

MONITORING OF RIVER IMPROVEMENT

WORKS IN UPPER LAM TSUEN RIVER

SHE SHAN RIVER AND UPPER TAI PO

RIVER – INVESTIGATION

DETAILED ECOLOGICAL MONITORING

REPORT (NO.2)

Prepared By:

ALLIED ENVIRONMENTAL CONSULTANTS LTD.

For:

Drainage Services Department

Issue No. : Issue 1

Issue Date : May 2016

Project No. : 1266

AGREEMENT NO. CE 65/2013 (EP)

POST-CONSTRUCTION ECOLOGICAL

MONITORING OF RIVER IMPROVEMENT

WORKS IN UPPER LAM TSUEN RIVER

SHE SHAN RIVER AND UPPER TAI PO

RIVER – INVESTIGATION

DETAILED ECOLOGICAL MONITORING

REPORT (NO.2)

Prepared By:

ALLIED ENVIRONMENTAL CONSULTANTS LTD.

For:

Drainage Services Department

Author:

Joanne Ng

BSc MSc

AHKIEIA

Checked: Approved:

Andy Lai Grace Kwok Bsc(Hons) AMHKIOA, MSEE, CEEQUAL, BEng(Hons) MHKIEIA MHKIOA

BEAM Pro MISWA MIAIA MRAPA LEED AP

BEAM Pro CAP

This report has been prepared by Allied Environmental Consultants Limited with all reasonable skill, care and diligence within the terms of the Agreement with the client, incorporating

our General Terms and Conditions of Business and taking account of the resources devoted to it by agreement with the client.

We disclaim any responsibility to the client and others in respect of any matters outside the scope of the above.

This report is confidential to the client and we accept no responsibility of whatsoever nature to third parties to whom this report, or any part thereof, is made known. Any such party

relies upon the report at their own risk.

File: 808p-R2-1509-LT-DSReport- (revised)160229 3/21/2016 1

Agreement No. CE65/2013(EP)

Post-Construction Ecological Monitoring of River

Improvement Work in Upper Lam Tsuen River, She Shan

River and Upper Tai Po River – Investigation

Detailed Ecological Monitoring Report (No. 2)

Upper Lam Tsuen River

September 2015

Prepared by: Mike pang September 14, 2015

Validated by: Mark Shea September 14, 2015

Ecology Team: China-Hong Kong Ecology Consultants


Post-Construction Ecological Monitoring of River Improvement Work in Upper Lam

Tsuen River, She Shan River and Upper Tai Po River – Investigation Agreement No.

CE65/2013(EP)


Upper Lam Tsuen River

Table of Contents Page

1 Introduction 3

2 Summary of Major Points

3 Monitoring Methodology 4

4 Monitoring Results 6

5 Summary and Commentary

6 References 11

FIGURES

Figure 1. :Sampling location of ecological survey and monitoring at Upper Lam

Tsuen River, Tai Po.

PHOTOS

Photo 1: Abundant invasive species - Brachiaria mutica

Photo 2: Vegetation coverage of gabion and river bed in middle section of the river

Photo 3: Dense vegetation coverage in Lam Tsuen River

Photo 4: Hong Kong Newt

TABLE

Table 4.1: Flora species recorded along the Upper Lam Tsuen River including

riparian habitat.

Table 4.2: Flora species recorded from belt transect survey at the Upper Lam Tsuen

River

Table 4.3: Avifauna recorded along survey transects and at four selected point count

locations at Upper Lam Tsuen River.

Table 4.4: Odonata species recorded at the Upper Lam Tsuen River

Table 4.5: Aquatic Macro invertebrates and other fauna recorded at Upper Lam Tsuen

River.

Table 4.6: Fish species and Hong Kong Newt recorded at Upper Lam Tsuen River.

Table 4.7: Abiotic data for Upper Lam Tsuen River.


1 Introduction

1.1 Agreement No. CE65/2013(EP) Post-Construction Ecological Monitoring of

River Improvement Work in Upper Lam Tsuen River, She Shan River and

Upper Tai Po River – Investigation required detailed ecological survey for

Lam Tsuen River and She Shan River during dry season. The collected data

are mainly used to compare with baseline parameters in order to assess

ecological recovery process and effectiveness of ecological migration

proposed and enforced during the construction period.

1.2 The scope of the ecological monitoring was detailed in EM & A Manual of the

project. In brief, the survey aimed to collect data on abiotic factors such as

water quality, substratum characteristics, water flow as well as flora and fauna.

1.3 China Hong Kong Ecology Consultants Ltd. was committed by Allied

Environmental Consultants Ltd (AEC) to undertake the ecological monitoring

tasks for the project since December 2014.

1.4 This is the number 2 detailed ecological monitoring report summarizing the data

collected from detailed surveys of July and August in 2015. It contains the

following subsections:

Summary of major points

Monitoring Methods and Results

Summary and Comments


Detailed monitoring surveys were undertaken in July and August of 2015;

Flora recoded in Lam Tusen River is in a normal growth and more

abundant than baseline survey;

The diversity and abundance of bird, marco-invertebrate were observed

with no significant change comparing with baseline level ;

More species and higher abundance of fish in Lam Tusen River was

observed comparing with baseline level;

The population of Hong Kong Newt in Lam Tusen River was

significantly increased following with more colonization of vegetation

within the river course; and

Water parameters showed no difference to baseline level except nitrate

level has decreased slightly.

3 Monitoring Methodology

3.1 Riparian Vegetation

Riparian vegetation, including aquatic and emergent, was sampled using line

transects along the affected river channel and riparian habitat. Species, relative

abundance and average heights were recorded. Vegetation surveys were

conducted at four selected belt transects with two located at the lower portion

(T3 and T4) of the river channel and another two at the upper section (T1 and

T2) of the river respectively (Figure 1). The belt transects was run across the

river channel in order to collect quantitative data of the vegetation, e.g.,


species inventory, height, percentage cover. Qualitative data of plants was

collected by recording plant species, relative abundance along line transect.

Nomenclature and protection status of the species followed those documented

in Lai et al (2004) and Hong Kong Herbarium (2015).

3.2 Avifauna

Avifauna survey was conducted during post construction monitoring period.

Special attention was given to the river channel and corridor area which birds

used as feeding and foraging habitat. Avifauna surveys were undertaken in the

early morning plus species recorded in the rest of the day when conducting

other taxonomic groups (benthic, fish, insect) monitoring. Numerical

abundance was recorded at fixed count points within a radius of 30-50m

according to landscape feature and visual penetration extent. The duration of

the point count of birds was standardized for 10 minutes at each location in

order to collect comparable data. Transect count along accessible section of

river channel were used in order to collect qualitative data. Binoculars and

digital camera were the main items of equipment used. Nomenclature and

protection status of the species follows the AFCD website

(www.hkbiodiversity.net) and Carey et al (2001).

The point count was conducted at four locations with two located at the lower

portion of the river channel (T3&T4) and the other two located at the upper

section of the river (T1&T2). The point count and survey transect locations for

the bird survey and sampling sites for surveys of other faunal groups and flora

were presented in Figure 1.

3.3 Adult Odonata Survey

Adult Odonata survey was conducted along transects (Figure 1). Binoculars,

digital camera and hand net were utilized to aid identification. Numerical

abundance, species identity and other notable behavior were recorded.

Nomenclature and protection status of the species followed those documented

in the AFCD website (www.hkbiodiversity.net), Wilson et al (2004) and Tam

et al (2011). Adult Odonata survey was conducted along line transects in

parallel with river channel within the works area where access was permitted.

3.4 Aquatic Macro-invertebrates

Macro-invertebrates in the river channel were surveyed. Sampling was

conducted at five sampling locations including two sites located at the lower

portion (T3 and T4) of the river channel and another two sites at the upper

section (T1 and T2) of the river, as well as the reference site. Those sampling

sites covered major type of river habitats, e.g. river pool and riffle (Figure 1)

Five replicates were taken at each sampling point and pool together for further

sample sorting and identification. Kick sampling and hand netting were the

survey methodologies for river organisms. Dissection microscope and digital

camera were used to aid identification and enumeration. Numerical

abundance and species identity were recorded. Nomenclature and protection

status of the species has followed those documented in the AFCD website

(www.hkbiodiversity.net) and other literatures such as Dudgeon (1994).

http://www.hkbiodiversity.net/


3.5 Fish and Newt

Fish community and Paramesotriton hongkongensis at the specified river

channel was monitored by live trapping, hand netting and direct observation

methods.

Sampling was conducted at five sampling locations including two sites located

at the lower portion (T3 and T4) of the river channel and another two sites at

the upper section (T1 and T2) of the river, as well as reference site. Those

sampling sites covered major type of river habitats, e.g. river pool and riffle

(Figure 1). The number of the observed fish and newt was estimated and

recorded. Nomenclature and protection status of the species followed those

documented in the AFCD website (www.hkbiodiversity.net) and Lee et al

(2004).

3.6 Abiotic Data Collection

3.6.1 Water Quality Monitoring

Dissolved oxygen level, pH value, conductivity, salinity, BOD and nutrient

level (nitrate and ammonium) were measured and analyzed by conventional

methods in situ or in laboratory. The instruments for measuring dissolved

oxygen level, pH value, conductivity, salinity were model: DO-5510, AZ8685,

AZ8361 and AZ8374 respectively. All the instruments were calculated every

monitoring month according to the operation manuals in order to obtain the

precise result. BOD test took 5 days to complete within darkness incubator

with stable temperature at 20oC and was performed using model: DO-5510 for

measuring dissolved oxygen. Nutrient levels including nitrate and ammonia

were performed in laboratory by applying the In-house method SOP056 (FIA)

and SOP057 (FIA) respectively.

3.6.2 Sediment Characteristics

Sediment/substrate characteristics were recorded of sediment cover in

percentage e.g. mud, sand, rock, boulder and cemented bottom in the river bed

at sampling sites.

3.6.3 Water Flow

Water flow rates in river channel were measured by recording the time taken

for a floating object (e.g. floating ball) to cover a measured distance.

The sampling locations for surveys were presented in Figure 1.

4 Monitoring Results

4.1 Vegetation

Detailed surveys were undertaken along the transect at Upper Lam Tsuen

River. A total of 63 species were recorded from the survey and the result was

more diverse than baseline level, in which only 21 species of vegetation were

record. The increased vegetation abundance indicated that the improved river

has provided a more suitable environment for establishment of vegetation,

especially for the design of natural river bed, where vegetation could hold


tightly on the rough surface to avoid being washing out by flooding. Most

recorded species were wetland species with a few floating aquatic species such

as Lemna minor, Pistia stratiotes and submerged plants such as Hydrilla

verticillata. An invasive species Brachiaria mutica was the dominant species

along the river (Photo 1). It was found that vegetation has generally covered

gabion and river bed in most of the area (Photo 2). Most of the plants are in

good health, the average height of plant is significantly increasing comparing

with the data measured in baseline, the highest plant of 2m was recorded

along the survey transect. Dominant flora species were shown in the Table

4.1 marked with relative abundance sign “+++”. Results of vegetation survey

and belt transect survey were presented in Table 4.1 and Table 4.2.

Photo 1: Abundant invasive species -

Brachiaria mutica

Photo 2: Vegetation coverage of gabion

and river bed in middle section of the

river.

4.2 Fauna

4.2.1 Avifauna

An avifauna detailed surveys were undertaken along survey transects and at

four selected point count locations. Over 30 species of birds were recorded

during the bird surveys. Bird’s species composition in Lam Tsuen River has

changed in terms of abundance and species richness towards the data collected

from baseline to post-construction monitoring, more species and higher

abundance recorded were related to the improved river, where provided dense

vegetation as their habitats, as well as food source. Two species of conservation

interest were recorded during the detailed surveys including Egretta garzetta

and Ardeola bacchus, they are both listed as “Regional Concern” by Fellowes

et al. (2002) and observed foraging in the river. Transect and Point Count

locations were shown on Figure 1. Result of bird survey was presented in the

Table 4.3.

4.2.2 Adult Odonata Survey

Odonata detailed surveys were performed and a list of recorded odonata

species at Upper Lam Tsuen River is shown in Table 4.4. 16 species of

odonata were recorded along the river transect, all recorded species were

common and wide spread in Hong Kong. Species richness increased

significantly compared with the data collected from approximate season in

baseline level. Mating behavior of odonata was commonly seen in the river


and their larvae were usually collected from kicking sampling. Sampling

location was shown in Figure 1.

4.2.3 Aquatic Macro-invertebrates

Upper Lam Tsuen River was flowing with constant water during survey.

Aquatic-net and kick sampling were performed at the river. The river benthic

fauna collected was mainly comprised of insects, molluscs and crustaceans.

Species composition recorded in detailed surveys was similar to baseline

survey. Details of recorded of river benthic fauna refers to Table 4.5. Sampling

location was shown on Figure 1.

4.2.4 Hong Kong Newt

Detailed Surveys of Hong Kong Newt were conducted at Upper Lam Tsuen

River. Adult Paramesotriton hongkongensis was observed at the Lam Tsuen

River with low abundance during current non-breeding season. Only few

individuals were found around their potential habitats where consisted of

riparian vegetation. Although low abundance of newt was found, the decrease

in abundance is not related to any impacts raised from the river, assuming that

most of the newts are back to the terrestrial area during the current non-

breeding period. The abundance is expected to redevelop in coming breeding

season from September to March (Dudgeon, 2003). According to last year

capture survey, more newts were found along the river indicating that the

improved river is capable to carry more individuals than baseline level. The

increased colonization of vegetation in river bed was the main reason of

increased abundance of Hong Kong Newt as riparian vegetation grown along

the channel especially along water margin could provide shelter and breeding

habitat for Hong Kong Newt (Photos 3-4). Record of Hong Kong Newts can

be referred to Table 4.6.

Photo 3: Dense vegetation coverage in

Lam Tsuen River

Photo 4: Hong Kong Newt

4.2.5 River Fish Fauna

Fish detailed surveys were performed at Upper Lam Tsuen River. 18 species of

freshwater fish, including species recorded from reference site, were recorded.

Comparing with baseline data, more species were recorded assuming river is


in a process of restoration and becoming more mature and stable. Oreochromis

niloticus and Zacco platypuses were the dominated species in the river.

Acrossocheilus parallens were recorded at upper, middle and lower river

sections. Acrossocheilus parallens is a rare freshwater fish species in Hong

Kong. Except Acrossocheilus parallens, Parazacco spilurus is considered with

conservation interest. Fish counting at 2 x 2 meter area were performed and

number of fish individuals was lower than baseline survey. Details of recorded

of fish fauna refers to Table 4.6. Sampling location was shown on Figure 1.

4.3 Abiotic Data

Data on water quality and major river hydrological feature (water flow and

substratum) of the river were collected and are presented in the Table 4.7.

Generally, there were no significant change on most of the parameters

measured from baseline and detailed surveys respectively. Lower level of

nitrate was measured during detailed survey indicating that water quality was

improved due to nitrate absorption by abundant vegetation or decreased

sewage discharge. Results of water test were presented in the Table 4.7.

The river substratum was comprised of over 85-90% stones or rocks in most

of the river sections with moderate water flow (up to 0.2m/second at pool and

0.5m/second at riffle).


Detailed ecological monitoring surveys were carried out in July and August

2015 and relevant biotic and abiotic data was collected according to project

specification and EM & A Manual. Benthic fauna was temporally de-faunated

in river sections due to river bed engineering works during construction period

between 2008 and early 2013 and is under recovery process after that period.

Abundant vegetation was generally established on the gabion and river bed

along the river course, more species were recorded than baseline survey.

Avifauna and marco-invertebrate were recorded with no significant change on

their species richness and abundance between baseline and detailed survey.

Species richness of odonata increased significantly compared with the data

collected from approximate season in baseline level. Following the river

became more stable and mature after the completion of construction, more fish

species and higher abundance of newt could be found during the survey.

Major parameters measured from baseline and detailed surveys were similar and

retaining in an acceptable level. Nitrate level was decreased in detailed survey.

Overall water quality is good and contains low concentration of nutrients.


6 REFERENCES

Carey, G.J., Chalmers, M.L., Diskin, D.A., Kennerley, P.R., Leader, P.J., Leven, M.R.,

Lewthwaite, R.W., Melville, D.S., Turnbull, M. and Yung, L.(2001). The Avifauna of

Hong Kong. Hong Kong Bird Watching Society.

Dudgeon, D. (2003). Hillstreans. The Department of Ecology & Biodiversity of The

University of Hong Kong and Wan Li Book Co, Lte. Hong Kong.

Dudgeon, D. and Corlett, R. (1994). Hills and Streams - An Ecology of Hong Kong.

Hong Kong University Press, Hong Kong.

Fellowes, J.R., Lau, M.W.N., Dudgeon, D., Reels, G., Ades, G.W.J., Carey, G.J.,

Chan, B.P.L., Kendrick, R.C., Lee, K.S., Leven, M.R., Wilson, K.D.P. & Yu, Y.T.

(2002). Wild animals to watch: Terrestrial and freshwater fauna of conservation

concern in Hong Kong. Memoirs of the Hong Kong Natural History Society 25: 123-

159.

Hong Kong Biodiversity Website (2015) :

http://www.afcd.gov.hk/english/conservation/hkbiodiversity/hkbiodiversity.html

Hong Kong Herbarium (2015) :

http://herbarium.gov.hk/

Lai, P.C.C., Lam, Y.W., So, P.S., Tam, K.Y., Wan, P.Y.M. and Yip, K.L. (2004).

Check List of Hong Kong Plants, Agriculture, Fisheries and Conservation Department.

Hong Kong.

Lee, V.L.F., Lam, S.K.S., NG, F.K.Y., Chan, T.K.T. and Young, M.L.C. (2004).

Field Guide to the Freshwater Fish of Hong Kong, Friends of the Country Parks and

Cosmos Books Ltd, Hong Kong.

Tam, T.W., Leung, K.K., Kwan, B.P. S., Wu, K. K. Y., Tang, S. S. H., So, I.W.Y.,

Cheng, J.C.Y., Yuen, E.F.M., Tsang, Y.M and Leung, H.W. (2011). The Dragonflies

of Hong Kong. Agriculture, Fisheries and Conservation Department, Friends of the

Country Parks and Cosmos Books Ltd., Hong Kong.

Wilson, K.D.P., Tam, K.W., Kwan, B.S.P., Wu, K.K.Y., Wong, B.S.F. and Wong,

J.K. (2004). Field guide to the dragonflies of Hong Kong (2nd

Edition). Agriculture,

Fisheries and Conservation Department, Friends of the Country Parks and Cosmos

Books Ltd., Hong Kong.


FIGURES


TABLE

Baseline

monitoring

　Family 　Species name Species name in Chinese Jul to Aug 08 Dec-14 Jan-15 Jul-15 Aug-15

Acanthaceae Ruellia coerulea 蘭花草 +

Amaranthaceae Celosia argentea 青葙 + ++ + + +

Amaranthaceae Amaranthus viridis 野莧 + + + +

Amaranthaceae Alternanthera philoxeroides 空心蓮子草 ++ + + +

Amaranthaceae Alternanthera sessilis 蓮子草 + +

Anacardiaceae Rhus hypoleuca 白背漆 +

Annonaceae Uvaria macrophylla 紫玉盤 +

Apiaceae Oenanthe javanica 水芹 + + +

Apiaceae Centella asiatica 崩大碗 + + +

Araceae Alocasia odora 海芋 + + + + +

Araceae Colocasia esculenta 芋 + + + + +

Araceae Pistia stratiotes 大薸 +

Arecaceae Rhapis excelsa 棕竹 +

Asteraceae Bidens alba 白花鬼針草 + ++ ++ ++ ++

Asteraceae Mikania micrantha 薇甘菊 ++ +++ ++ ++ ++

Asteraceae Ageratum conyzoides 勝紅薊 + + + +

Asteraceae Emilia sonchifolia 一點紅 + + + +

Asteraceae Wedelia chinensis 蟛蜞菊 ++ + + +

Asteraceae Erechtites hieracifolia 革命菜 +

Asteraceae Conyza canadensis 小蓬草 + + + +

Asteraceae Youngia japonica 黃鵪菜 + + + +

Asteraceae Eclipta prostrata 鱧腸 + + + +

Asteraceae Spilanthes paniculata 金鈕扣 + + + +

Athyriaceae Callipteris esculenta 菜蕨 + +

Blechnaceae Blechnum orientale 烏毛蕨 +

Brassicaceae Cardamine flexuosa 碎米薺 + + + +

Brassicaceae Nasturtium officinale 西洋菜 ++ + + +

Brassicaceae Rorippa indica 塘葛菜 + + + +

Brassicaceae Capsella bursa-pastoris 齊菜 + + + +

Buddlejaceae Buddleja asiatica 白背楓 +

Caesalpiniaceae Cassia alata 翅莢決明 + + + + +

Caryophyllaceae Drymaria cordata 荷蓮豆 + + + +

Caryophyllaceae Myosoton aquaticum 鵝腸菜 + + + +

Commelinaceae Commelina diffusa 節節草 + ++ +++ ++ ++

Convolvulaceae Ipomoea cairica 五爪金龍 ++ ++ ++ ++

Convolvulaceae Pharbitis nil 牽牛 +

Convolvulaceae Ipomoea aquatica 蕹菜 +

Cucurbitaceae Solena amplexicaulis 茅瓜 +

Cuscutaceae Cuscuta australis 南方菟絲子 + + +

Cyperaceae Cyperus flabelliformis 風車草 + + + +

Cyperaceae Cyperus sp. 莎草 + + + +

Euphorbiaceae Macaranga tanarius 血桐 + + + + +

Euphorbiaceae Bischofia javanica 秋楓 + + +

Fabaceae Pueraria lobata 野葛 ++ + + + +

Fabaceae Crotalaria pallida 猪屎豆 +

Fabaceae Sesbania cannabina 田菁 +

Fabaceae Pueraria lobata var.thomsonii 粉葛 + + + +

Magnoliaceae Michelia alba 白蘭 + +

Malvaceae Hibiscus rosa-sinensia 大紅花 +

Mimosaceae Acacia confusa 台灣相思 + +

Mimosaceae Leucaena leucocephala 銀合歡 + + + +

Mimosaceae Mimosa pudica 含羞草 +

Table 4.1. Flora species recorded along the Lam Tsuen River including riparian habitat.

Riparian Plant

Detailed Survey 1 Detailed Survey 2

Baseline

monitoring

　Family 　Species name Species name in Chinese Jul to Aug 08 Dec-14 Jan-15 Jul-15 Aug-15

Table 4.1. Flora species recorded along the Lam Tsuen River including riparian habitat.


Mimosaceae Calliandra haematocephala 紅絨球 + + + +

Moraceae Ficus hispida 對葉榕 + + + + +

Moraceae Ficus variegata 青果榕 + + +

Musaceae Musa paradisiaca 大蕉 + + + + +

Myrtaceae Cleistocalyx nervosum 水翁 +

Nyctaginaceae Bougainvillea spectabilis 勒杜鵑 + +

Oleaceae Ligustrum sinense 山指甲 + + +

Onagraceae Ludwigia erecta 美洲水丁香 ++ + + +

Oxalidaceae Oxalis corniculata 酢漿草 + + + +

Plantaginaceae Plantago major 車前草 +

Poaceae Panicum repens 枯骨草 + +

Poaceae Pennisetum purpureum 象草 + + ++ + +

Poaceae Pennisetum alopecuroides 狼尾草 + +

Poaceae Rhynchelytrum repens 紅毛草 + +

Poaceae Microstegium ciliatum 剛秀竹 ++ + + + +

Poaceae Brachiaria mutica 巴拉草 ++ +++ +++ +++ +++

Poaceae Miscanthus floridulus 五節芒 + + + +

Poaceae Arundinella nepalensis 石珍芒 + + + +

Poaceae Panicum maximum 大黍 +

Poaceae Coix lacryma-jobi 薏苡 + + + +

Poaceae Arundo donax 蘆竹 +

Poaceae Chloris virgata 虎尾草 +

Polygonaceae Rumex trisetifer 假菠菜 ++ + ++ ++

Polygonaceae Polygonum chinense 火炭母 + + + +

Polygonaceae Polygonum hydropiper 水蓼 + + + +

Polygonaceae Polygonum glabrum 光蓼 + +

Polygonaceae Polygonum perfoliatum 杠板歸 +

Polygonaceae Polygonum lapathifolium 大馬蓼 +

Portulacaceae Portulaca oleracea 馬齒莧 +

Ranunculaceae Ranunculus sceleratus 石龍芮 + + +

Rubiaceae Adina pilulifera 水團花 +

Sapindaceae Dimocarpus longan 龍眼 +

Scrophulariaceae Scoparia dulcis 野甘草 +

Scrophulariaceae Lindernia anagallis 長蒴母草 +

Solanaceae Solanum nigrum 龍葵 +

Solanaceae Lycopersicon esculentum 番茄

Solanaceae Solanum torvum 水茄 + + + +

Sterculiaceae Sterculia lanceolata 假蘋婆 +

Sterculiaceae Byttneria aspera 刺果藤 +

Thelypteridaceae Cyclosorus parasiticus 華南毛蕨 + + + +

Thelypteridaceae Macrothelypteris torresiana 普通針毛蕨 + + + +

Ulmaceae Celtis sinensis 朴樹 + + + + +

Ulmaceae Trema orientalis 異色山黃麻 + + + +

Ulmaceae Trema tomentosa 山黃麻 +

Urticaceae Pilea microphylla 透明草 + + + +

Verbenaceae Duranta erecta 假連翹 + + +

Urticaceae Boehmeria nivea 苧麻 + + + +

Verbenaceae Lantana camara 馬纓丹 + + + + +

Lemnaceae Lemna minor 浮萍 + + + +

Hydrocharitaceae Hydrilla verticillata 黑藻 + + + +

Note:

+, occurred; ++, common; +++, Species abundant/dominant in the the study area

Submerged Plant

Floating Plant

Stream

Transect

Family Species Chinese name Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) %

Poaceae Microstegium ciliatum 剛秀竹 0.4 40 0.4 40

Fabaceae Pueraria lobata 野葛 0.5 30 0.5 30 0.6 10 0.6 10 0.5 10 0.4 5 0.5 10 0.4 5

Poaceae Pennisetum purpureum 象草 3 20 3 20 3 15

Araceae Alocasia odora 海芋 1 10 1 10 1.8 1 1.8 1

Caesalpiniaceae Cassia alata 翅莢決明 1.2 10 1.2 10

Magnoliaceae Michelia alba 白蘭 6 10 6 10

Poaceae Brachiaria mutica 巴拉草 1.2 70 1.2 70 1 10 1.5 15 1.3 30 1 5 1 20 1 20 1.3 20 1 10 0.9 30 1.5 30 0.5 70 1 15 1 30 1.5 30 0.8 # 1 15

Moraceae Ficus hispida 對葉榕

Asteraceae Mikania micrantha 薇甘菊 0.3 18 0.3 18 0.3 18 0.3 18 0.4 10 0.4 15 0.3 5 0.3 20 0.3 5 0.2 5 0.3 5 0.4 5 0.3 5 0.2 5 0.3 5 0.4 5

Musaceae Musa paradisiaca 大蕉

Ulmaceae Celtis sinensis 朴樹 6 10 6 10

Araceae Pistia stratiotes L. 大漂

Urticaceae Boehmeria nivea 苧麻

Asteraceae Bidens alba 白花鬼針草 0.5 5 0.8 12 0.7 10 1 10 0.4 15 1 15 0.3 5 0.4 5

Poaceae Coix lacryma-jobi 薏苡 2 5

Solanaceae Solanum nigrum 龍葵

Cyperaceae Cyperus flabelliformis 風車草 0.6 2 0.6 2

Poaceae Miscanthus floridulus 五節芒

Euphorbiaceae Macaranga tanarius 血桐

Asteraceae Wedelia chinensis 蟛蜞菊 0.3 20 0.2 10 0.4 20 0.2 10

Commelinaceae Commelina diffusa 節節草 0.3 12 0.8 22 0.3 20 0.4 10 0.4 20 0.3 20 0.3 20 0.2 20 0.2 5 0.4 20 0.3 20 0.2 20 0.2 5 0.4 20

Asteraceae Erechtites hieracifolia 革命菜

Thelypteridaceae Cyclosorus parasiticus 華南毛蕨

Convolvulaceae Pharbitis nil 牽牛

Verbenaceae Lantana camara 馬纓丹

Mimosaceae Leucaena leucocephala 銀合歡

Brassicaceae Nasturtium officinale 西洋菜 0.3 2 0.1 1 0.3 10 0.1 15

Onagraceae Ludwigia erecta 美洲水丁香 2 25 2 13 2 10 1.8 5 2 30 2 10 2 5 1.8 5

Poaceae Pennisetum alopecuroides 狼尾草 0.5 5 2 5 0.8 5 2 5

Amaranthaceae Celosia argentea 青葙 1.5 15

25 20 15 40 20 20 30 19 15 35 13 55 15 35 # 55

P1 – Point count location 1; P4 – Point count location 4

Detailed Survey - 2

Bare Gound

P1 P4 P1

Jan-15

Detailed Survey - 1 Detailed Survey - 1Baseline monitoring

Aug-15

Table 4.2. Flora species recorded from belt transect survey at the Upper

Lam Tsuen River (T1- Upper stream sampling site …... T4 - Lower

stream sampling site)

T4P4

Dec-14

T1 T2 T3 T2 T3T1 T2 T3 T4

Detailed Survey - 2

T4

Jul-08 Aug-08 Jul-15

T1 T2 T3 T4 T1

C P1 P4 C P1 P4 C T1 T2 T3 T4 C T1 T2 T3 T4 C T1 T2 T3 T4 C T1 T2 T3 T4

Barn Swallow Hirundo rustica 家燕 PM C + 1 1 ++ 3 3 ++ 3 2 4

Black Drongo Dicrurus macrocercus 黑卷尾 Sv C + 1

Black Kite Milvus lineatus 麻鷹R, RC,

Cap.586C + + +

Black-faced bunting Emberiza spodocephala 灰頭鵐 WV&PM C +

Black-necked Starling Sturnus nigricollis 黑領椋鳥 R C +++ 2 1 ++ 2 ++ 2 3 2 ++ 2 2 ++ 2 2 2 ++ 4 3 3

Black-winged Cuckoo-shrike Coracina melaschistos 暗灰鵑鵙 PM C

Buzzard (Common Buzzard) Buteo buteo 普通鵟 WV,Cap.586 C

Chinese Bulbul Pycnonotus sinensis 白頭鵯 R C ++ 2 3 +++ 4 5 ++ 2 2 3 ++ 2 3 1 ++ 2 1 2 ++ 3 2 2

Chinese Pond Heron Ardeola bacchus 池鷺 R,RC C + ++ 3 1 + 2 1 3 + 2 2 1 + 1 + 1

Common Kingfisher Alcedo atthis 普通翠鳥 R C + 1 + 1 + 1

Common Koel Eudynamys scolopacea 噪鵑 R C ++ 1 + +

Common Sandpiper Actitis hypoleucos 磯鷸 WV&PM C + +

Common Tailorbird Orthotomus sutorius 長尾縫葉鶯 R C + 1 1 + 1 ++ 1 1 ++ 1 1 ++ 2 2 ++ 1 2 2

Crested bulbul Pycnonotus jocosus 紅耳鵯 R C +++ 2 3 ++ 3 4 +++ 4 3 2 +++ 3 2 3 +++ 8 3 3 5 +++ 7 5 5 5

Crested Goshawk Accipiter trivirgatus 鳳頭鷹 R, CR, Cap.586 U

Crested Myna Acridotheres cristatellus 八哥 R C ++ 2 ++ 2 ++ 2 3 5 ++ 3 4 2 ++ 3 2 3 3 ++ 2 4

Crested Serpent Eagle Spilornis cheela 蛇鵰 R, VU, LC U

Daurian redstart Phoenicurus auroreus 北紅尾鴝 WV U ++ 1 1 1 + 1

Domestic pigeon Columba sp. 鴿 R C + + 3 2 + +

Dusky Warbler Phylloscopus fuscatus 褐柳鶯 WV C + 1 1 + 1 + 1 1 + 1 1

Eurasian tree sparrow Passer montanus 麻鵲 R C ++ 2 + ++ 3 2 +++ 3 2 1 ++ 3 2 3 ++ 3 2 2 3

Great Coucal Centropus sinensis 褐翅鴉鵑 R,VU C + 1 1 +

Great Tit Parus major(commixtus) 大山雀 R C + + 2

Green Sandpiper Tringa ochropus 白腰草鷸 PM&WV U + +

Grey Heron Ardea cinerea 蒼鷺 WV,PRC C +

Grey Wagtail Motacilla cinerea 灰鶺鴒 WV C + 1 2 1 + 1 1 1 + 1 + 1 1

Japanese White Eye Zosterops japonica(simplex)暗綠繡眼鳥 R C + + ++ 3 4 5 ++ 3 3 ++ 3 3 2 5 ++ 4 2 3 2

Jungle Crow Corvus macrorhynchus 大咀烏鴉 R C

Large Hawk Cuckoo Cuculus sparverioides 鷹鵑 SV U

Lesser Coucal Centropus bengalensis 小鴉鵑 R, VU C

Little Egret Egretta garzetta 小白鷺 R, RC C + ++ 2 1 3 1 ++ 1 2 3 2 + 1 1 1 + 1 1

Great Egret Ardea alba 大白鷺 R,WV, RC C + 1

Little Swift Apus affinis 小白腰雨燕 R,SpM C ++ 3 + 4

Magpie Pica pica 喜鵲 R C + +

Magpie Robin Copsychus saularis 鵲鴝 R C ++ 1 1 + 1 1 ++ 1 1 2 2 ++ 1 1 2 2 ++ 2 1 1 2 ++ 2 2

Mandarin Duck Aix galericulata 鴛鴦 WV U

Masked Laughing Thrush Garrulax perspicillatus 黑臉噪 R C ++ 2 2 ++ 2 ++ 3 ++ 4

Night Heron Nycticorax nycticorax 夜鷺 R&WV, LC C + 1

Northern Shoveler Anas clypeata 琵嘴鴨 WV C

Olive Backed Pipit Anthus hodgsoni 樹鷚 WV C + 1 + + 1

Plaintive Cuckoo Cacomantis merulinus 八聲杜鵑 SV C

Red-billed Blue Magpie Urocissa erythrorhyncha 紅咀藍鵲 R C

Red-flanked Bluetail Tarsiger cyanurus 紅脇藍尾鴝 PM&WV C

Rufous Turtle Dove Streptopelia orientalis 山斑鳩 R C

Rufous-backed Shrike Lanius schach 棕背伯勞 R C + + 1 1 + 1 1 + 1 1

Rufous-capped Babbler Stachyridopsis ruficeps 紅頭穗鶥 R C + ++

Scarlet Minivet Pericrocotus flammeus 赤紅山椒鳥 R C ++ 12

Siberian Stonechat Saxicola maurus 黑喉石 WV U ++ 1 1 ++ 1 1

Sooty-headed Bulbul Pycnonotus aurigaster 白喉紅臀鵯 R U + 1

Spotted Dove Streptopelia chinensis 珠頸斑鳩 R C + 1 1 + 1 +++ 2 3 3 2 +++ 2 3 5 2 ++ 2 2 2 4 ++ 1 2 2 4

Spotted Munia Lonchura punctulata 斑文鳥 R C +++ 5 7 ++ 5 8

Velvet-fronted Nuthatch Sitta frontalis 絨額鳾 R C

White Wagtail Motacilla alba 白鶺鴒 WV C + ++ 1 1 2 1 ++ 1 2 3 2 ++ 2 +++ 8

White-breasted Waterhen Amaurornis phoenicurus 白胸苦惡鳥 R C + + + 1 + + 1

White-throated Kingfisher Halcyon smyrnensis 白胸翡翠 R, LC C

Yellow Bellid Prinia Prinia flaviventris 黃腹鷦鶯 R C + 1 + + 1 1 + 1 1 + 1

Yellow Wagtail Motacilla flava 黃鶺鴒 WV&PM U

Zitting cisticola Cisticola juncidis 棕扇尾鶯 WV&PM C +

Number of birds 19 12 20 13 29 26 49 17 27 23 42 14 27 19 38 34 14 27 36 26

No. of species 18 12 8 19 9 5 33 15 15 18 12 29 14 13 15 9 21 10 11 16 11 23 10 14 14 11

Note: R – Resident; WV – Winter visitor; PM – Passage migrant; C – Common; U – Uncommon

SpM – Spring migrant; Sv–Summer Visitor

C – transect survey; P1 – Point count location 1; P4 – Point count location 4

+, occurred; ++, common; +++, abundant/dominant species in the the study area

Commonness and status were decided accroding to AFCD biodiversity website (www.hkbiodiversity.net)

All bird species are under protection of Wild Animals Protection Ordinance (Cap. 170)

Endangered Species of Animals and Plants Ordinance (Cap. 586)

RC : Regional concern Fellowes et al (2002)

LC : Local Concern Fellowes et al (2002)

PRC: Potential Regional onver Fellowes et al (2002)

CR: Rare in China Red Data Book Status

VU: Vulnerable in China Red Data Book Status

Detailed Survey - 2

Jan-15

Abundance

Dec-14

Abundance

Detailed Survey - 1

Aug-14

Abundance

Baseline monitoring

Jul-08

(T1- located at upper river channel sampling site to T4 - located at lower river Channel sampling site)

Abundance

Aug-08

Abundance

Jul-14

Abundance

Table 4.3 Avifauna recorded along survey transects and at four selected point count locations of Lam Tsuen River.

Common Name Species name Chinese name Status Commonness

http://zh.wikipedia.org/w/index.php?title=%E5%85%AB%E8%81%B2%E6%9D%9C%E9%B5%91&action=edit&redlink=1


Table 4.4. Odonata species recorded at the Upper Lam Tsuen River

Species Common name Chinese nameStatus Common-

nessJul-08 Aug-08 Dec-14 Jan-15 Jul-15 Aug-15

Acisoma panorpoides panorpoides Asian Pintail 錐腹蜻 NP VC +

Brachythemis contaminata Asian Amberwing 黃翅蜻 NP VC

Ceriagrion auranticum ryukyuanum Orange-tailed Sprite 琉球橘黃蟌 NP VC + + +

Coeliccia cyanomelas Blue Forest Damsel 黃紋長腹蟌 NP VC

Copera marginipes Yellow Featherlegs 黃狹扇蟌 NP VC + + +

Crocothemis servilia servilia Crimson Darter 红蜻 NP VC + + + + + +

Euphaea decorata Black-banded Gossamerwing 方帶幽蟌 NP VC +

Ictinogomphus pertinax Common Flangetail 霸王葉春蜓 NP C + +

Ischnura senegalensis Common Blue Jewel 褐斑異痣蟌 NP VC

Mnais lacteola Indochinese Copperwing 煙翅綠色蟌 P, LC C

Nannophya pygmaea Scarlet Dwarf 侏紅小蜻 P, LC C

Neurobasis chinensis Chinese Greenwing 華艷色蟌 NP VC + + +

Neurothemis fulvia Russet Percher 網脈蜻 NP VC + +

Neurothemis tullia tullia Pied Percher 截斑脈蜻 NP C

Orthetrum chrysis Red-faced Skimmer 華麗灰蜻 NP VC + + +

Orthetrum glaucum Common blue skimmer 黑尾灰蜻 NP VC

Orthetrum luzonicum Marsh Skimmer 呂宋灰蜻 NP VC + +

Orthetrum pruinosum neglectum Common Red Skimmer 赤褐灰蜻 NP VC + +

Orthetrum sabina sabina Green Skimmer 狹腹灰蜻 NP VC

Pantala flavescens Wandering Glider 黃蜻 NP VC + + + + +

Paracercion calamorum duyeri Dusky Lilysquatter 葦尾蟌 P, LC C

Prodasineura autumnalis Black Threadtail 烏齒原蟌 NP VC + +

Pseudagrion rubriceps rubriceps Orange-faced Sprite 丹頂斑蟌 NP UC +

Rhinocypha perforata perforata Common Blue Jewel 三斑鼻蟌 NP VC + + +

Rhyothemis variegata arria Variegated Flutterer 斑麗翅蜻 NP C

Trithemis aurora Crimson Dropwing 曉褐蜻 NP VC + + + +

Trithemis festiva Indigo Dropwing 慶褐蜻 NP VC + +

Zygonyx iris insignis Emerald Cascader 彩虹蜻 P,PGC VC

Note: NP – Not protected in Hong Kong; P-Protection in Hong Kong


Detailed Survey -1 Detailed Survey -2

LC- Local Concern - Fellowes et al (2002)

PGC - Potential Global Concern - Fellowes et al (2002)

Baseline monitoring

“VC” – Very Common; “UC” – Uncommon; “C” - Common

“+” – Species exists in the study area

“++” – Species common in the study area

“+++” – Species abundant/dominant in study area

Species Chinese name

Status Com

mon

ness

Upper

stream

Lower

stream

Upper

stream

Lower

stream

Reference

point T1 T2 T3 T4Reference



point T1 T2 T3 T4

Biomphalaria sp. -- NP VC + + + + + + + + + + + + + + +

Brotia hainanensis -- NP VC +++ ++ ++ ++ ++ ++ + + + ++ ++ + + + ++ ++ ++ + ++ ++ ++ ++ + ++

Melanoides tuberculata 瘤擬黑螺 NP VC + + + + + + + + + +

Pomacea canaliculata 蘋果螺 NP VC + + + + + + + + + + + ++ ++ ++ ++ ++ ++ ++ ++ ++ ++

Radix plicatulus 羅白螺 NP VC + + + + + + + + + + + + + + + + + + + + + + +

Sinotaia quadrata 田螺 NP VC + + + + + + + + + + + + + + + + + + + + + +

Baetis sp. -- NP VC + + + + + + + + + + + + + + + + +

Caenis sp. -- NP VC

Chironomus sp. 蠓幼虫 NP VC + + + + + + + + + + + + + + + + + + + + + + + +

Electrogenas sp. -- NP VC + + + + + + + + + + + + + +

Hydropsyche sp. -- NP VC + + + + + + + + + +

Indobaetis sp. -- NP VC + + + + + + + + + + + + + + + + + + + + +

Mnais sp. -- NP VC + + + + + +

Orthetrum sp. -- NP VC + + + + + + + + + + + + + + +

Caridina cantanensis 廣東米蝦 NP VC + + + + + ++ ++ ++ ++ + ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++

Cryptopotamon anacoluthon 鰓刺溪蟹 NP VC + + + + + +

Macrobrachium hainanense 海南沼蝦 NP VC + + + + + + + + + + + + + + + + + + + + + +

Somanniathelphusa zanklon 束腰蟹 NP VC + +

Note: NP – Not protected in Hong Kong; P - Protected in Hong Kong

“VC” – Very Common; “UC” – Uncommon; “C” - Common; "R" - Rare

+, occurred; ++, common; +++, abundant/dominant Species in the the study area

Detaield Survey - 2

Reference point was the sampling location outside the works area.

Jul-15

Crustaceans

Insects

Molluscs

Jan-15 Aug-15

Table 4.5 Aquatic Macro invertebrates recorded at Lam Tsuen

River (T1- upper river channel sampling site . T4 - lower river

channel sampling site)

Baseline monitoring

Aug-08Sampling

pointJul-08 Dec-14

Detaield Survey - 1

Sampling point Upper

stream

Lower

stream

Upper

stream

Lower

stream

ReferenceT1 T2 T3 T4




Species Chinese nameStatus Commonness

Fish

Acrossocheilus parallens 側條光唇魚 P, PGC R + + ++ ++ ++ ++ ++ ++ ++ ++ + + + + + + + +

Channa maculate 斑鱧 NP Common + + +

Cirrhina molitorella 鯪魚 NP C

Clarias fuscus 胡子鯰 NP C + + + +

Cyprinus carpio var. viridiviolaceus 錦鯉 NP C + +

Gambusia affinis 食蚊魚 NP VC + + + + + + + + + + + + + + + + + + + + + +

Liniparhomaloptera disparis 擬平鰍 NP C + + + + + + + + + + + + + + + +

Misgurnus anguillicaudatus 泥鰍 NP Common + + + + + + + + + + + + + + + + + + +

Oreochromis niloticus 尼羅口孵非鲫 NP C + + + + + + + + + + + ++ ++ ++ ++ + ++ ++ ++ ++

Parazacco spilurus 異鱲 V and

NP

Common + + + + + + + + + + + + + + + + + + + + + +

Poecilia reticulate 孔雀花魚將 NP VC + + + + + + + + + + +

Pseudogastromyzon myersi 麥氏擬腹吸鰍 NP C + + + + + + + + + + + + + + +

Pterocryptis cochinchinensis 黃鯰 NP C + + + + + + +

Puntius semifasciolatus 七星魚 NP C ++ + ++ + + + ++ ++ + + + ++ ++ + + + ++ ++ + + + ++ ++ +

Rhinogobius spp. 鰕虎魚 NP C/UN/R + + + + ++ ++ ++ + + ++ ++ ++ ++ + ++ ++ ++ ++ + ++ ++ ++ ++

Schistura fasciolata 橫紋南鰍 NP C + + + + + + + + + + + ++ ++ + ++ ++

Xiphophorus hellerii 劍尾魚 NP C + + + + + ++ ++ + + ++ ++ + + + ++ + + + + ++ + +

Xiphophorus variatus 雜色劍尾魚 NP C + + + + + + + + +

Zacco platypus 寬鰭鱲 NP C + ++ + ++ + ++ ++ + + + ++ ++ + + + ++ ++ + + + ++ ++ + +

2x2m fish counting Number of fish 70 60 75 60 60 60 60 50 50 50 50 60 60 60 12 15 18 8 7 15 12 16 10 10

Amphibian

Paramesotriton hongkongensis 香港瘰螈P (Cap 170,

NT, PGC)

R + + + + + + + + + + + + + + + + + + + + + + +

Fejervarya limnocharis 澤蛙 NP VC

Note: NP – Not protected in Hong Kong

“VC” – Very Common; “UC” – Uncommon; “C” - Common; "R" - Rare

+, occurred; ++, common; +++, abundant/dominant Species in the the study area

-V – Listed as vulnerable in China Fish Red Data Book

-Reference point was the sampling location outside the works area used to compare the with the data within works area.

"Cap 170" - List in Wild Animials Protcetion Ordinance (Cap.170)

"NT" - Near Treatened in IUCN Red List Status

"PGC"-Potential Golal Concern by Fellowes et al (2002)

Detialed Survey - 1 Detailed Survey 2

Jul-15Jan-15Dec-14

Table 4.6 Fish species and amphibians at Upper Lam Tsuen River

(T1- upper river channel sampling site . T4 - lower river channel

sampling site)

Aug-08 Aug-15Jul-08

Baseline monitoring

Baseline monitoring

Parameter / date 8-Aug

Replicate T1 T2 T3 T4 T1 T2 T3 T4 T1 T2 T3 T4 T1 T2 T3 T4

DO (mg/L) 9.2 7.2 8.1 8.2 8.2 8.9 9.2 9.3 9.2 8.3 8.2 8.0 8.3 8.4 8.3 8.3 8.3

pH 7.49 8.5 8.4 8.2 8.2 7.9 8.2 8.3 7.9 7.7 7.8 7.8 7.8 7.7 7.7 7.6 7.7

Nitrate (mg N/L) 0.36 0.9 1 0.9 0.9 0.9 0.9 0.9 0.9 0.8 0.8 0.8 0.9 0.8 0.8 0.8 0.9

Ammonia (mg/L) <0.01 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1

Salinity (ppt) <0.1 0.02 0.02 0.02 0.02 0.03 0.03 0.03 0.03 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01

Conductivity (µS/cm) 60 112 92 86 67 156 153 152 163 42 32 35 55 36 42 46 38

BOD (mg/L) <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2

Water flow at pool 0.1-0.3

Water flow at riffle 0.4-0.7

Sand (%) 15 5 5 8 10 5 5 8 10 5 5 8 10 5 5 8 10

Stone (%) 80 93 90 90 75 93 90 90 75 93 90 90 75 93 90 90 75

Mud (%) 5 2 5 2 15 2 5 2 15 2 5 2 15 2 5 2 15

0.2-0.5

Jan-15

0.03-0.2

0.2-0.5

Dec-14

0.03-0.2

Table 4.7 Abotic data for Upper Lam Tsuen

River(T1- upper river channel sampling site . T4

- lower river channel sampling site)

Aug-15

0.03-0.2

0.2-0.5

Detailed Survey -1 Detailed Survey - 2

0.2-0.5

Jul-15

0.03-0.2

File:808p-R2-1509-SS-ADEcoMReport- (revised)160127 2/15/2016 1

Agreement No. CE65/2013(EP)

Post-Construction Ecological Monitoring of River

Improvement Work in Upper Lam Tsuen River, She Shan

River and Upper Tai Po River – Investigation


She Shan River

September 2015

Prepared by: Mike Pang September 16, 2015

Validated by: Mark Shea September 16, 2015

Ecology Team: China Hong Kong Ecology Consultants


Post-Construction Ecological Monitoring of River Improvement

Work in Upper Lam Tsuen River, She Shan River and Upper Tai Po

River – Investigation

Agreement No. CE65/2013(EP


She Shan River

Table of Contents Page

1 Introduction 3

2 Summary of Major Points 3

3 Monitoring Methodology 4

4 Monitoring Results 6


6 References

FIGURES

Figure 1: Sampling location of ecological survey and monitoring at She Shan River,

Tai Po.

PHOTOS

Photo 1: Vegetation Clearance

Photo 2: Photo: Dominant species - Brachiaria mutica

TABLE

Table 4.1: Flora species recorded along the She Shan River including riparian habitat.

Table 4.2: Flora species recorded from belt transect survey at the She Shan River.

Table 4.3: Avifauna recorded along survey transects and at three selected point count

locations at She Shan River.

Table 4.4: Odonata species recorded at the She Shan River

Table 4.5: Aquatic Macro invertebrates and other fauna recorded at She Shan River.

Table 4.6: Fish species and Hong Kong Newt recorded at She Shan River.

Table 4.7: Abiotic data for She Shan River.


1 Introduction

1.1 Agreement No. CE65/2013(EP) Post-Construction Ecological Monitoring of

River Improvement Work in Upper Lam Tsuen River, She Shan River and

Upper Tai Po River – Investigation required a post-construction ecological

monitoring programme when the project completed. The collected data are

mainly used to assess ecological recovery process and effectiveness of

ecological migration proposed and enforced during the construction period.

1.2 The scope of the ecological monitoring was detailed in EM & A Manual of the

project. In brief, the survey aimed to collect data on abiotic factors such as

water quality, substratum characteristics, water flow as well as flora and fauna.

1.3 China Hong Kong Ecology Consultants Ltd. was committed by Allied

Environmental Consultants Ltd (AEC) to undertake the ecological monitoring

tasks for the project from December 2014.

1.4 This is the number 2 detailed ecological monitoring report summarizing the data

collected from detailed surveys of July and August in 2015. It contains the

following subsections:

Summary of major points

Monitoring Methods and Results

Summary and Comments


Detailed monitoring surveys were undertaken in July and August of

2015

Fauna and flora along the drainage project sections is in a process of re-

establishing or restoration;

All fauna are recorded increase in abundance and species richness

compared with baseline level; and

Paramesotriton hongkongensis abundance was not found due to

seasonality.

3 Monitoring Methodology

3.1 Riparian Vegetation

Riparian vegetation, including aquatic and emergent, was sampled using line

transects along the affected river channel and riparian habitat. Species, relative

abundance and average heights were recorded. Vegetation survey was

conducted at three selected belt transects located at the upper (T1), middle (T2)

and lower portion (T3) of the river channel respectively (Figure 1). The belt

transects was run across the river channel in order to collect quantitative data

of vegetation, e.g., species inventory, height, percentage cover. Qualitative

data of plants was collected by recording plant species along line transect, e.g.,

species inventory, relative abundance. Nomenclature and protection status of

the species has followed those documented in the Lai et al (2004) and Hong

Kong Herbarium (2015).


3.2 Avifauna

Avifauna survey was conducted during the post construction monitoring

period. Special attention was given to those stream channel area which birds

used as feeding and foraging habitat. Avifauna surveys were undertaken in the

early morning plus species recorded in the rest of the day when conducting

other taxonomic groups (benthic, fish, insect) monitoring. Numerical

abundance was recorded at fixed count points within a radius of 30 to 50m

according to landscape feature and visual penetration extent. The duration of

the point count of birds was standardized for 10 minutes at each location in

order to collect comparable data. Transect count along accessible section of

river channel were used in order to collect qualitative data. Binoculars and

digital camera were the main items of equipment used. Nomenclature and

protection status of the species has followed in the AFCD website

(www.hkbiodiversity.net) and Carey et al (2001).

The point count was conducted at three locations located at the lower (T3),

middle (T2) and upper (T1) portion of the river channel respectively. The

point count and survey transect locations for the bird survey and sampling

sites for surveys of other faunal groups and flora were presented in Figure 1.

3.3 Adult Odonata Survey

Adult Odonata survey was conducted along transects (Figure 1). Binoculars,

digital camera and hand net were utilized to aid identification. Numerical

abundance, species identity and other notable behavior were recorded.

Nomenclature and protection status of the species has followed those

documented in the AFCD website (www.hkbiodiversity.net), Wilson et al

(2004) and Tam et al (2011). Adult Odonata survey was conducted along line

transects in parallel with river channel within the works area where access was

permitted.

3.4 Aquatic Macro-invertebrates

Macro-invertebrates in the riverbed were surveyed. Four sampling sites were

selected to collect necessary macro-invertebrate fauna for ecological

monitoring information, which covered upper (T1), middle (T2) and lower

(T3) sections of the river respectively, as well as reference site (Figure 1).

Five replicates were taken at each sampling point and pool together for further

sample process. Kick sampling and hand netting were the survey

methodologies for stream organisms. Dissection microscope and digital

camera were used to aid identification and enumeration. Numerical

abundance, species identity was recorded. Nomenclature and protection status

of the species has followed those documented in the AFCD website

(www.hkbiodiversity.net), and other literatures such as Dudgeon (1994).

3.5 Fish Population and Hong Kong Newt

Fish community at the specified river channel was monitored by live trapping,

hand netting and direct observation methods. The Hong Kong newt was

surveyed by direct observation and hand netting as well.

Sampling was conducted at four proposed sampling locations at upper (T1),




middle (T2), lower (T3) sections and reference site respectively. Those

sampling sites covered major type of stream habitats, e.g. river pool and riffle

(Figure 1). The number of the observed fish was estimated and recorded.

Nomenclature and protection status of the species has followed those

documented in the AFCD website (www.hkbiodiversity.net) and Lee et al

(2004).

3.6 Abiotic Data Collection

3.6.1 Water Quality Monitoring

Dissolved oxygen level, pH value, conductivity, salinity, BOD and nutrient

level (nitrate and ammonium) were sampled and analyzed by conventional

methods in situ or in laboratory. The instruments for measuring dissolved

oxygen level, pH value, conductivity, salinity were model: DO-5510, AZ8685,

AZ8361 and AZ8374 respectively. All the instruments were calculated every

monitoring month according to the operation manuals in order to obtain the

precise result. BOD test took 5 days to complete within darkness incubator

with stable temperature at 20oC and was performed using model: DO-5510 for

measuring dissolved oxygen. Nutrient levels including nitrate and ammonia

were performed in laboratory by applying the In-house method SOP056 (FIA)

and SOP057 (FIA) respectively.

3.6.2 Sediment Characteristics

Sediment/substrate characteristics were recorded of sediment cover in

percentage e.g. mud, sand, rock, boulder and cemented bottom in the stream

bed at sampling sites.

3.6.3 Water Flow

Water flow rates in river channel were measured by recording the time taken

for a floating object (e.g. floating ball) in a measured distance. The sampling

locations for surveys were presented in Figure 1.

4 Monitoring Results

4.1 Vegetation

Detailed surveys were undertaken along the transect at She Shan River. In

total, 59 flora species was recorded within the survey transects along the river

course. With the comparison of 50 species recorded in baseline level, there are

only few more species recorded. It is assumed that middle to lower section of

the river was made up with concrete so that only species with good

acceptability could establish onto the river bed. In addition, vegetation in these

sections were regularly got cleared by the workers (Photo 1). Only upper

section could support more diverse vegetation, however, upper section is

currently dominated by an invasive species Brachiaria mutica (Photo 2). The

surveys period was within wet season, frequent flooding events could also

possibly wash the vegetation out of the river. Most recorded species were

wetland species. The height of the dominated riparian grass and herb species

were in a range from 0.3m to 1.5m as observed along survey transect.

Dominant flora species were shown in the Table 4.1 marked with relative

abundance sign “+++”. Vegetation has generally covered the riverbed and


riparian habitat in upper sections and partially covered the riverbed in middle

to lower section.

Photo 1: Vegetation clearance Photo: Dominant species - Brachiaria

mutica

4.2 Fauna

4.2.1 Avifauna

An avifauna detailed surveys were undertaken along survey transects and at

four selected point count locations. Over 25 species of birds were recorded

during the bird surveys. Bird’s species composition in She Shan River has

changed in terms of abundance and species richness towards the data collected

from baseline to post-construction monitoring, more species and higher

abundance recorded were related to the improved river, where provided dense

vegetation as their habitats, as well as food source. Some of wetland dependent

species including Ardeola bacchus and Egretta garzetta are considered as

Regional Concern by Fellowes et al. (2002), they were always found foraging

in the river. Spilornis cheela was recorded hovering above middle section of the

river, which is listed under Endangered Species of Animals and Plants

Ordinance (Cap. 586) and considered as Vulnerable and Local Concern in

China Red Data Book Status and by Fellowes et al. (2002) respectively.

Centropus sinensis is also considered as Vulnerable in China Red Data Book

Status, was observed staying above the tree in middle section of the river. In

addition, two species were the first time to be recorded in She Shan River

including Eurystomus orientalis and Chalcophaps indica, in which Eurystomus

orientalis is the uncommon passage migrant in Hong Kong, while Chalcophaps

indica is the scarce resident in Hong Kong and listed as Vulnerable in China

Red Data Book Status.. Transect and Point Count locations were shown on

Figure 1. Result of bird survey was presented in the Table 4.3.

4.2.2 Adult Odonata Survey

Odonata detailed surveys were performed and a list of recorded odonata

species at Upper Lam Tsuen River is shown in Table 4.4. 13 species of

odonata were recorded along the river transect, all recorded species were

common and wide spread in Hong Kong. Species richness increased

significantly compared with the data collected from approximate season in

baseline level. Mating behavior of odonata was commonly seen in the river


and their larvae were usually collected from kicking sampling. Sampling

location was shown in Figure 1.

4.2.3 Aquatic Macro-invertebrates

The river benthic fauna collected was mainly comprised of insects, molluscs,

crustaceans and as well as fish. Details of recorded benthic fauna refer to Table

4.5. Sampling location was shown on Figure 1.

4.2.4 Hong Kong Newt

From the detailed surveys, no newt was recorded in those potential habitats in

She Shan River. Newts normally breed from September to March, they usually

spend their time on terrestrial area during their non-breeding period. Thus, the

disappearance of newt in the river is mainly related to seasonality, but not

impacts raised from the river. Record of Hong Kong Newts can be referred to

Table 4.6.

4.2.5 Fish Fauna

Fish surveys were performed at She Shan River and total 13 species of

freshwater fish were recorded. Native fish Zacco platypus and Oreochromis

niloticus were abundant species dominating in the river channel. Among the

recorded fish, Parazacco spilurus is classified as “Vulnerable” in Red China

Data Book, it was commonly observed along the river with low abundance.

The composition of fish species was similar to baseline level with slightly

increased by few species indicating that the improved river is stable and

mature enough to support more species. Details of recorded of fish fauna refers

to Table 4.6. Sampling location was shown on Figure 1.

4.3 Abiotic Data

Data on water quality and major stream hydrological feature (water flow and

substratum) of the stream were collected and are presented in the Table 4.7.

The overall data collected from detailed survey and baseline lever were similar

except the river substratum has changed significantly. The river substratum

was comprised of over 30-80% stones or rocks in large proportion of the river

sections with slow water flow (up to 0.2m/second at pool and 0.5m/second at

riffle). Generally, the water was clean and nutrient levels were moderate as a

result of effluent from nearby cultivation lands, but the impact from the

effluent is anticipated. Results of water test are presented in the Table 4.7.


Detailed ecological monitoring surveys were carried out in July and August

2015 and relevant biotic and abiotic data was collected according to project

specification and EM & A Manual. Paramesotriton hongkongensis was not

recorded due to seasonality. Following the river became more stable and

mature after the completion of construction, the species richness and

abundance of fauna have increased compared with baseline level.


Aquatic plants and riparian vegetation were generally established at new

drainage channel. Vegetation has completely covered the gabion wall mainly

in upper sections River and partially covered the river bed along the river

channel. Vegetation diversity is similar to baseline level due to human

disturbance, design structure and seasonality.

The water quality of the river was generally good along river channel and

most of the parameters are similar to baseline level except greatly change in

river substratum.

6 REFERENCES

Carey, G.J., Chalmers, M.L., Diskin, D.A., Kennerley, P.R., Leader, P.J., Leven, M.R.,

Lewthwaite, R.W., Melville, D.S., Turnbull, M. and Yung, L.(2001). The Avifauna of

Hong Kong. Hong Kong Bird Watching Society.

Dudgeon, D. (2003). Hillstreans. The Department of Ecology & Biodiversity of The

University of Hong Kong and Wan Li Book Co, Lte. Hong Kong.

Dudgeon, D. and Corlett, R. (1994). Hills and Streams - An Ecology of Hong Kong.

Hong Kong University Press, Hong Kong.

Fellowes, J.R., Lau, M.W.N., Dudgeon, D., Reels, G., Ades, G.W.J., Carey, G.J.,

Chan, B.P.L., Kendrick, R.C., Lee, K.S., Leven, M.R., Wilson, K.D.P. & Yu, Y.T.

(2002). Wild animals to watch: Terrestrial and freshwater fauna of conservation

concern in Hong Kong. Memoirs of the Hong Kong Natural History Society 25: 123-

159.

Hong Kong Biodiversity Website (2015) :

http://www.afcd.gov.hk/english/conservation/hkbiodiversity/hkbiodiversity.html

Hong Kong Herbarium (2015) :

http://herbarium.gov.hk/

Lai, P.C.C., Lam, Y.W., So, P.S., Tam, K.Y., Wan, P.Y.M. and Yip, K.L. (2004).

Check List of Hong Kong Plants, Agriculture, Fisheries and Conservation Department.

Hong Kong.

Lee, V.L.F., Lam, S.K.S., NG, F.K.Y., Chan, T.K.T. and Young, M.L.C. (2004).

Field Guide to the Freshwater Fish of Hong Kong, Friends of the Country Parks and

Cosmos Books Ltd, Hong Kong.

Tam, T.W., Leung, K.K., Kwan, B.P. S., Wu, K. K. Y., Tang, S. S. H., So, I.W.Y.,

Cheng, J.C.Y., Yuen, E.F.M., Tsang, Y.M and Leung, H.W. (2011). The Dragonflies

of Hong Kong. Agriculture, Fisheries and Conservation Department, Friends of the

Country Parks and Cosmos Books Ltd., Hong Kong.

Wilson, K.D.P., Tam, K.W., Kwan, B.S.P., Wu, K.K.Y., Wong, B.S.F. and Wong,

J.K. (2004). Field guide to the dragonflies of Hong Kong (2nd

Edition). Agriculture,

Fisheries and Conservation Department, Friends of the Country Parks and Cosmos

Books Ltd., Hong Kong.


FIGURE


TABLE

Baseline

monitoring

　Family 　Species nameSpecies name in

Chinese

Jul to Aug

08Dec-14 Jan-15 Jul-15 Aug-15

Acanthaceae Dicliptera chinensis 狗肝菜 +

Acoraceae Acorus gramineus 金錢蒲 +

Amaranthaceae Alternanthera philoxeroides 空心蓮子草 + +

Amaranthaceae Celosia argentea L. 青葙 +

Apiaceae Oenanthe javanica 水芹

Aquifoliaceae Ilex rotunda 鐵冬青 +

Araceae Alocasia odora 海芋 + + + + +

Araceae Colocasia esculenta 芋 + + + + +

Araceae Syngonium podophyllum 合果芋 + +

Araceae Pistia stratiotes 大薸 + + +

Asteraceae Bidens alba 白花鬼針草 + ++ + ++ ++

Asteraceae Synedrella nodiflora 金腰箭 + + + +

Asteraceae Mikania micrantha 薇甘菊 + ++ ++ ++ ++

Asteraceae Erigeron karvinskianus 加勒比飛蓬 + + + +

Asteraceae Eclipta prostrata 鱧腸 + + + + +

Asteraceae Gynura divaricata 白子菜 + + +

Asteraceae Ageratum conyzoides 勝紅薊 + + + +

Asteraceae Emilia sonchifolia 一點紅 + + + +

Asteraceae E rechtites hieraciifolius 梁子菜 + + +

Asteraceae Y oungia japonica 黃鵪菜 + + + +

Asteraceae S pilanthes paniculata 金鈕扣 + + + +

Athyriaceae Callipteris esculenta 菜蕨 + + + + +

Begoniaceae Begonia cucullata var.hookeri 四季秋海棠 +

Blechnaceae Blechnum orientale 烏毛蕨 +

Brassicaceae Nasturtium officinale 西洋菜 + + + + +

Brassicaceae R orippa indica 塘葛菜 + + + +

Brassicaceae C apsella bursa-pastoris 齊菜 +

Caesalpiniaceae Bauhinia championii 缺葉藤 + + +

Caryophyllaceae Drymaria diandra 荷蓮豆 + + + +

Caryophyllaceae Myosoton aquaticum 鵝腸菜 + + + +

Chenopodiaceae Chenopodium ficifolium 小藜 + + +

Commelinaceae Commelina diffusa 節節草 + ++ + +++ ++ ++

Convolvulaceae Pharbitis nil 牽牛 + +

Convolvulaceae Ipomoea cairica 五爪金龍 + + + + +

Cucurbitaceae Solena amplexicaulis 茅瓜

Cuscutaceae Cuscuta australis 南方菟絲子 + + +

Cyperaceae Cyperus sp. 莎草 + + + +

Cyperaceae Cyperus involucratus 風車草 + + + +

Euphorbiaceae Macaranga tanarius 血桐 + + + + +

Euphorbiaceae Aporusa dioica 銀柴 +

Fabaceae Pueraria lobata 野葛 + ++ + ++ ++

Fabaceae Sesbania cannabina 田菁 +

Lauraceae Cinnamomum burmannii 陰香 + +

Lygodiaceae Lygodium japonicum 海金沙 +

Magnoliaceae Michelia alba 白蘭 + +

Malvaceae Hibiscus rosa-sinensia 大紅花 + + +

Mimosaceae Mimosa pudica 含羞草 + +

Detailed Survey 2Detailed Survey 1

Table 4.1. Flora species recorded along the She Shan River including riparian habitat.

Riparian Plant

Baseline

monitoring

　Family 　Species nameSpecies name in

Chinese

Jul to Aug

08Dec-14 Jan-15 Jul-15 Aug-15


Table 4.1. Flora species recorded along the She Shan River including riparian habitat.

Mimosaceae Leucaena leucocephala 銀合歡 + + + +

Mimosaceae C alliandra haematocephala 紅絨球 + + + +

Moraceae Broussonetia papyrifera 構樹 +

Moraceae Ficus hispida 對葉榕 + + + + +

Moraceae Ficus pumila 薜荔 + +

Moraceae Ficus variolosa 變葉榕 +

Moraceae Ficus variegata 青果榕 + + +

Musaceae Musa paradisiaca 大蕉 + + + +

Myrsinaceae Maesa perlarius 鯽魚胆 +

Myrtaceae Cleistocalyx operculatus 水翁 + + + +

Onagraceae Ludwigia hyssopidolia 草龍 + + +

Onagraceae Ludwigia erecta 美洲水丁香 ++ + + +

Oxalidaceae Averrhoa carambola 楊桃 +

Oxalidaceae Oxalis corniculata 酢醬草 + +

Plantaginaceae Plantago major 車前草 +

Poaceae Panicum maximum 大黍 + + + + +

Poaceae Panicum repens 枯骨草 + + + + +

Poaceae Brachiaria mutica 巴拉草 +++ +++ +++ +++

Poaceae Pennisetum purpureum 象草 ++ + ++ + +

Poaceae Coix lacryma-jobi 薏苡 + + + + +

Poaceae Microstegium ciliatum 剛秀竹 ++ ++ + + +

Poaceae Miscanthus floridulus 五節芒 + + + +

Poaceae Pennisetum alopecuroides 狼尾草 + + +

Poaceae Digitaria radicosa 紅尾翎 + + +

Polygonaceae Polygonum hydropiper 水蓼 + + + + +

Polygonaceae Polygonum glabrum 光蓼 + +

Polygonaceae Polygonum chinense 火炭母 + + + +

Polygonaceae Rumex trisetifer 假菠菜 + + + +

Polygonaceae Polygonum lapathifolium 大馬蓼 + + +

Rubiaceae Hedyotis hedyotidea 牛白藤 +

Sapindaceae Dimocarpus longan 龍眼 +

Solanaceae Solanum torvum 水茄 + + + + +

Solanaceae Solanum americanum 少花龍葵 +

Thelypteridaceae Cyclosorus parasiticus 華南毛蕨 + + +

Ulmaceae Celtis sinensis 朴樹 + + + +

Ulmaceae Celtis timorensis 樟葉朴 +

Ulmaceae Trema orientalis 異色山黃麻 +

Ulmaceae Trema tomentosa 山黃麻 +

Urticaceae Boehmeria nivea 苧麻 + +

Urticaceae Pilea microphylla 透明草 + + + +

Urticaceae Pouzolzia zeylanica 霧水葛 + +

Verbenaceae Vitex quinata 山牡荆 +

Polygonaceae Polygonum perfoliatum 杠板歸 + + + +

Verbenaceae Lantana camara 馬纓丹 + + + + +

Lemnaceae Lemna minor 浮萍 +

Hydrocharitaceae Hydrilla verticillata 黑藻 + + +

Note:


“+++” – Species abundant/dominant in study area


Floating Plant

Submerged Plant

Table 4.2. Flora species recorded from belt transect survey at the She Shan River

(T1- Upper stream section,T2 - middle stream section and T3 - Lower stream section)

Stream

Transect P1 P1

Family Species Chinese name Height(m) % Height(m) % Height(m) % Height(m) %

Commelinaceae Commelina diffusa 節節草 0.2 20 10 6

Poaceae Panicum repens 枯骨草 0.3 5

Asteraceae Mikania micrantha 薇甘菊 0.2 7

Brassicaceae Nasturtium officinale 西洋菜

Moraceae Ficus microcarpa 細葉榕 0.7 5 0.6 7

Moraceae Ficus hispida 對葉榕 3 10 3 10

Poaceae Microstegium ciliatum 剛秀竹 0.5 5 0.5 3

Fabaceae Pueraria lobata 野葛 0.3 5 0.5 3 0.3 5

Araceae Colocasia esculenta 芋 0.2 5

Urticaceae Boehmeria nivea 苧麻 1.5 30 2 7

Asteraceae Bidens alba 白花鬼針草

Poaceae Pennisetum purpureum 象草 3 50 1 60 3 80 2 60

Poaceae Coix lacryma-jobi 薏苡

Amaranthaceae Alternanthera philoxeroides 空心蓮子草 0.2 10 0.2 7

Poaceae Panicum maximum 大黍

Moraceae Broussonetia papyrifera 構樹

Polygonaceae Polygonum chinense 火炭母

Onagraceae Ludwigia hyssopidolia 草龍

Cyperaceae Cyperus sp. 莎草


Poaceae Brachiaria mutica 巴拉草

Blechnaceae Blechnum orientale 烏毛蕨

Poaceae Pennisetum alopecuroides 狼尾草

Araceae Alocasia macrorrhizos 海芋

Lemnaceae L emna minor 浮萍

Polygonaceae Polygonum hydropiper 水蓼

Cyperaceae Cyperus involucratus 風車草

Onagraceae Ludwigia erecta 美洲水丁香

Convolvulaceae Ipomoea cairica 五爪金龍


Baseline monitoring

Aug-08

Bare Gound

P3P3

Jul-08

Table 4.2. Flora species recorded from belt transect survey at the She Shan River

(T1- Upper stream section,T2 - middle stream section and T3 - Lower stream section)

Stream

Transect

Family Species Chinese name

Commelinaceae Commelina diffusa 節節草

Poaceae Panicum repens 枯骨草

Asteraceae Mikania micrantha 薇甘菊

Brassicaceae Nasturtium officinale 西洋菜

Moraceae Ficus microcarpa 細葉榕

Moraceae Ficus hispida 對葉榕

Poaceae Microstegium ciliatum 剛秀竹

Fabaceae Pueraria lobata 野葛

Araceae Colocasia esculenta 芋

Urticaceae Boehmeria nivea 苧麻

Asteraceae Bidens alba 白花鬼針草

Poaceae Pennisetum purpureum 象草

Poaceae Coix lacryma-jobi 薏苡

Amaranthaceae Alternanthera philoxeroides 空心蓮子草

Poaceae Panicum maximum 大黍

Moraceae Broussonetia papyrifera 構樹

Polygonaceae Polygonum chinense 火炭母

Onagraceae Ludwigia hyssopidolia 草龍

Cyperaceae Cyperus sp. 莎草


Poaceae Brachiaria mutica 巴拉草

Blechnaceae Blechnum orientale 烏毛蕨

Poaceae Pennisetum alopecuroides 狼尾草

Araceae Alocasia macrorrhizos 海芋

Lemnaceae L emna minor 浮萍

Polygonaceae Polygonum hydropiper 水蓼

Cyperaceae Cyperus involucratus 風車草

Onagraceae Ludwigia erecta 美洲水丁香

Convolvulaceae Ipomoea cairica 五爪金龍


Bare Gound

T1 T1 T1 T1

Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) % Height(m) %

1 10 1 50 0.1 2 0.5 10 0.8 70 0.3 40 0.3 25 0.3 15

0.3 5 1 15 0.3 2 0.4 10 0.5 15 0.4 10 0.4 10 0.5 10 0.4 5

1 2 0.5 5 0.8 10 0.9 15 0.3 2 0.9 15 0.5 2

1..5 1 1 2 1 2

1.8 70 1.8 25 1.5 8 1.5 80 1 5 1 25 0.8 60 1 50 0.8 10 0.9 60 1 35 0.9 10

2 10 3 2

1 1

1.7 1 1.5 5 1.2 5 1.2 5

1.5 1 2 5 2 10 1.5 50 1.5 50

0.3 5 0.3 5

2 1 72 0 5 25 13 10 38 13 40 38

T2 T3

Aug-15

T2 T3

Jul-15

T2 T3


Jan-15

T2 T3

Dec-14

C P1 P3 C P1 P3 C T1 T2 T3 C T1 T2 T3 C T1 T2 T3 C T1 T2 T3

Barn Swallow Hirundo rustica 家燕 PM C ++ 2 2 ++ 4

Black Drongo Dicrurus macrocercus 黑卷尾 Sv C

Black Kite Milvus lineatus 麻鷹 R, RC, Cap.586 C + + +

Black-necked Starling Sturnus nigricollis 黑領椋鳥 R C + + 2 + 2 + 2 2 ++ 2 2 ++ 3

Black-throated

LaughingthrushGarrulax chinensis 黑喉噪鶥 R C + 1

Buzzard (Common Buzzard) Buteo buteo 普通鵟 WV, Cap 586 U +

Chinese Bulbul Pycnonotus sinensis 白頭鵯 R C + 2 + + 2 2 + 1 3 ++ 2 2 2 ++ 2 2

Chinese Pond Heron Ardeola bacchus 池鷺 R,RC C ++ 3 + 1 2 + 1 ++ 1 2 2 + 1 + 1

Common Emerald Dove Chalcophaps indica 綠翅金鳩 R,VU S + 1

Common Kingfisher Alcedo atthis 普通翠鳥 R C

Common Koel Eudynamys scolopacea 噪鵑 R C

Common Sandpiper Actitis hypoleucos 磯鷸 WV&PM C + 1 + 1

Common Tailorbird Orthotomus sutorius 長尾縫葉鶯 R C + 1 + 1 ++ 1 1 ++ 2 1 1 + 2 2 ++ 2 2

Crested bulbul Pycnonotus jocosus 紅耳鵯 R C ++ 3 2 +++ 2 3 2 +++ 3 2 4 +++ 5 5 7 +++ 3 3 8

Crested Goshawk Accipiter trivirgatus 鳳頭鷹 R, CR, Cap.586 U +

Crested Myna Acridotheres cristatellus 八哥 R C + 2 + 1 + 3 ++ 2 2 1 ++ 3

Crested Serpent Eagle Spilornis cheela 蛇鵰R, VU, LC, Cap

586U + 1

Domestic pigeon Columba sp. 鴿 R C + 2 + 1 2 ++ ++

Dusky Warbler Phylloscopus fuscatus 褐柳鶯 WV U ++ ++ 1 2 1 + 1 1 + 1 1

Eurasian tree sparrow Passer montanus 麻鵲 R C + 2 +++ 5 3 +++ 2 4 3 ++ 3 3 3 ++ 2 4

Fork-tailed Sunbird Aethopyga christinae 叉尾太陽鳥 R C + 2

Great Coucal Centropus sinensis 褐翅鴉鵑 R,VU C + 1 2 + 1 1 + + 1 + 1

Great Egret Ardea alba 大白鷺 R,RC U +

Great Tit Parus major(commixtus) 大山雀 R C

Green Sandpiper Tringa ochropus 白腰草鷸 PM&WV U

Grey Heron Ardea cinerea 蒼鷺 WV,PRC C

Grey Wagtail Motacilla cinerea 灰鶺鴒 WV C + 1 + 1 2 + 1 + 1

Japanese White Eye Zosterops japonica(simplex) 暗綠繡眼鳥 R C + 3 + 4 + 3 3 + 3 3

Large Hawk Cuckoo Cuculus sparverioides 鷹鵑 SV U +

Little Egret Egretta garzetta 小白鷺 R,RC C + + + 2 1 1 + 1 2 1 + 1 + 1

Magpie Robin Copsychus saularis 鵲鴝 R C + 1 + 1 + 1 + 1 1 2 + 2 2 + 1 2

Night Heron Nycticorax nycticorax 夜鷺 R,LC U

Olive Backed Pipit Anthus hodgsoni 樹鷚 WV C

Oriental Dollarbird Eurystomus orientalis 三寶鳥 PM U + 1

Plaintive Cuckoo Cacomantis merulinus 八聲杜鵑 SV C

Rufous-backed Shrike Lanius schach 棕背伯勞 R C + + + + + 1 + 1

Rufous-capped Babbler Stachyridopsis ruficeps 紅頭穗鶥 R C + + + 1 + 1

Scarlet Minivet Pericrocotus speciosus 赤紅山椒鳥 R C

Sooty-headed Bulbul Pycnonotus aurigaster 白喉紅臀鵯 R C

Spotted Dove Streptopelia chinensis 珠頸斑鳩 R C + 1 + 2 1 + 1 2 2 + 2 3 4 ++ 3 3 4 ++ 2 3 2

Spotted Munia Lonchura punctulata 斑文鳥 R U + 5 + 5

White Wagtail Motacilla alba 白鶺鴒 WV C + 1 ++ 1 2 2 ++ 1 2 2 + 1 1 + 1

White-breasted Waterhen Amaurornis phoenicurus 白胸苦惡鳥 R C + + +

Yellow Bellid Prinia Prinia flaviventris 黃腹鷦鶯 R C + 1 1 + 1

Number of birds 5 8 15 10 15 19 15 15 16 17 21 24 33 17 31 23

No. of species 11 4 4 16 10 6 21 9 11 7 24 10 13 14 19 10 12 15 25 8 19 8

Note: R – Resident; WV – Winter visitor; PM – Passage migrant; C – Common; U – Uncommon; S– Scarce

SpM – Spring migrant; Sv - Summer visitorC – transect count; P1 – Point count location 1; P3 – Point count location 3

+, occurred; ++, common; +++, abundant/dominant species in the the study area


All bird species are under protection of Wild Animals Protection Ordinance (Cap. 170)

Endangered Species of Animals and Plants Ordinance (Cap. 586)

RC : Regional concern Fellowes et al (2002)

LC : Local Concern Fellowes et al (2002)

PRC: Potential regional concern Fellowes et al (2002)

CR: Rare in China Red Data Book Status

VU: Vulnerable in China Red Data Book Status

Status Commonness

Aug-15

Abundance

Jul-15


Abundance Abundance

Baseline monitoring

Aug-08Jul-08

Abundance

Dec-14

Abundance Abundance

Jan-15

Table 4.3 Avifauna recorded along survey transects and at three selected point count locations at She Shan River.

Common Name Species name Chinese name

(T1- Upper stream section, T2 - middle stream section and T3 - Lower stream section)



Table 4.4. Odonate species recorded at the She Shan River

Species Common name Chinese nameStatus Commo--

nnessJul-08 Aug-08 Dec-14 Jan-15 Jul-15 Aug-15

Agriocnemis pygmnalis Wandering Midget 黃尾小蟌 NP VC

Brachythemis contaminata Asian Amberwing 黃翅蜻 NP VC

Ceriagrion auranticum ryukyuanum Orange-tailed Sprite 琉球橘黃蟌 NP VC + +

Copera ciliata Black-knees Featherlegs白狹扇蟌 NP VC

Copera marginipes Yellow Featherlegs 黃狹扇蟌 NP VC + +

Crocothemis servilia servilia Crimson Darter 红蜻 NP VC + + + + + +

Diplacodes trivialis Blue Percher 紋藍小蜻 NP VC +

Ictinogomphus pertinax Common Flangetail 霸王葉春蜓 NP C + +

Ischnura senegalensis Common Bluetail 褐斑異痣蟌 NP VC

Nannophya pygmaea Scarlet Dwarf 侏紅小蜻 NP C

Neurobasis chinensis chinensis Chinese Greenwing 華艷色蟌 NP VC +

Neurothemis fulvia Russet Percher 網脈蜻 NP VC + +

Orthetrum chrysis Red-faced Skimmer 華麗灰蜻 NP VC + + +

Orthetrum glaucum Common blue skimmer 黑尾灰蜻 NP VC

Orthetrum luzonicum Marsh Skimmer 呂宋灰蜻 NP VC +

Orthetrum pruinosum neglectum Common Red Skimmer 赤褐灰蜻 NP VC +

Orthetrum Sabina sabina Green Skimmer 狹腹灰蜻 NP C + +

Pantala flavescens Wandering Glider 黃蜻 NP VC + + + +

Prodasineura autumnalis Black Threadtail 烏齒原蟌 NP VC + +

Pseudagrion pruinosum fraseri Ferruginous-faced Sprite赤斑蟌 NP C

Pseudagrion rubriceps rubriceps Orange-faced Sprite 丹頂斑蟌 NP UC +

Rhinocypha perforata perforata Common Blue Jewel 三斑鼻蟌 NP VC + +

Rhyothemis variegata arria Variegated Flutterer 斑麗翅蜻 NP C + +

Trithemis aurora Crimson Dropwing 曉褐蜻 NP VC + + + +

Trithemis festiva Indigo Dropwing 慶褐蜻 NP VC + +

Zygonyx iris insignis Emerald Cascader 彩虹蜻 P,PG

C

VC



PGC - Potential Global Concern - Fellowes et al (2002)

Detailed Survey 1 Detailed Sruvey 2


LC- Local Concern - Fellowes et al (2002)


“+++” – Species abundance in the study area

Baseline monitoring

Note: NP – Not protected in Hong Kong ; P - Protected in Hong Kong

Species Chinese name

Status Common -

ness

Upper

stream

Lower

stream

Upper

stream

Lower

streamReference T1 T2 T3 Reference T1 T2 T3 Reference T1 T2 T3 Reference T1 T2 T3

Anodonta woodiana 背角無齒蚌 NP VC

Biomphalaria sp. -- NP VC + + + + + + + + + + + + +

Brotia hainanensis -- NP VC + + + + + + + + + + + + + + + +

Corbicula fluminea 河蜆 NP VC + + +

Melanoides tuberculata 瘤擬黑螺 NP VC + + + ++ + + + + + + + + + + + + + + + +

Pomacea canaliculata 蘋果螺 NP VC + ++ + + + + + + + + + + ++ ++ ++ ++ ++ ++ ++ ++

Radix plicatulus -- NP VC + + + + + + + + + + + + + + + + + + + +

Sinotaia quadrata 田螺 NP VC + + + ++ + + + + + + + + + + + ++ + + + ++

Baetis sp. NP VC + + + + + + + +

Caenis sp. -- NP VC + + + +

Chironomus sp. 蠓幼虫 NP VC + + ++ ++ + + + + + + + + + + + + + + + +

Euphaea sp. NP VC + + + + + +

Indobaetis sp. -- NP VC + + + + + + + + + + + + + + +

Odonate larvae NP VC +

Orthetrum spp. -- NP VC + + + + + + + + + + + + + + + +

Pseudagrion spp. -- NP UC + + + + + + + + +

Pseudocloeon sp. -- NP VC + + + + + + + +

Serratella sp. NP VC + + + + + + + +

Caridina cantanensis 廣東米蝦 NP VC + +

Note: NP – Not protected in Hong KongP - protected species in Hong Kong





- Reference point was the sampling location outside the works

area used to compare the with the data within works area.

Table 4.5 Aquatic Macro invertebrates recorded at She Shan River.

Jul-08

(T1- Upper stream section, T2 - middle stream section, T3 - Lower

stream section)

Sampling location

Baseline monitoring

Insects

Aug-08

Mollusks

Aug-15Jul-15

Crustaceans


Jan-15Dec-14

SpeciesStatus Commonness Upper

stream

Lower

stream

Upper

stream

Lower

streamReference T1 T2 T3 ReferenceT1 T2 T3 Reference T1 T2 T3 Reference T1 T2 T3

Channa maculata 斑鱧 NP C + + +

Clarias gariepinus 革胡子鲶 NP VC + + + + + +

Gambusia affinis 食蚊魚 NP VC ++ ++ + + + + + + + + + + + + + + + +

Misgurnus anguillicaudatus 泥鰍 NP C + + + + + + + + +

Oreochromis niloticus 尼羅口孵非鯽 NP C + ++ + + + + + + + + + + ++ ++ + ++ ++

Parazacco spilurus 異鱲 NP, V C + ++ + ++ + + + + + + + + + + + + + + + +

Poecilia reticulata 孔雀花魚將 NP VC ++ ++ + + + + + +

Pterocryptis cochinchinensis 越南隱鰭鯰 NP C + + + +

Puntius semifasciolatus 七星魚 NP C +++ ++ +++ +++ + + + + + + + + + + + + + + +

Rhinogobius spp. 鰕虎魚 NP C + + + + + + + + + + + + + + + + + +

Xiphophorus hellerii 劍尾魚 NP C + + ++ ++ + + + + + + + + + + + + +

Xiphophorus variatus 雜色劍尾魚 NP C + + + + + + + +

Zacco platypus 寬鰭鱲 NP C ++ + + + + ++ ++ + + ++ ++ + + + ++ + + + ++ +

80 60 80 60 60 50 50 40 50 40 40 50 15 8 15 8 20 10 20 10

Amphibian

Paramesotriton hongkongensis 香港瘰螈

P, Cap

170,

NT,

PGC

R

+ +

"Cap 170" - List in Wild Animials Protcetion Ordinance (Cap.170)

"NT" - Near Treatened in IUCN Red List Status

"PGC"-Potential Golal Concern by Fellowes et al (2002)

'V'' - Vulerable - in Red China Data Book

Aug-15Jul-15


Aug-08

Table 4.6 Fish species and Hong Kong Newt recorded at She Shan River

(T1- Upper stream section, T2 - middle stream section and T3 - Lower stream section)

Baseline monitoring

Jul-08


Jan-15Dec-14

- Reference point was the sampling location outside the works area used to compare

the with the data within works area.


Note: NP – Not protected in Hong Kong


2x2m fish number


Baseline monitoring

Stream Aug-08

Replicate T1 T2 T3 T1 T2 T3 T1 T2 T3 T1 T2 T3

DO (mg/L) 8.9 8.5 8.6 8.6 8.6 8.6 8.7 8.2 8.0 8.2 8.1 8.0 8.1

pH 7.29 8.2 8.5 8.4 9.0 8.8 8.8 7.8 7.7 7.9 7.6 7.7 7.6

Nitrate (mg N/L) 0.5 0.4 0.4 0.4 0.4 0.5 0.4 0.4 0.5 0.5 0.4 0.5 0.5

Ammonia (mg N/L) 0.1< 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1

Salinity (ppt) <0.1 0.02 0.02 0.02 0.03 0.03 0.03 0.02 0.02 0.02 0.01 0.01 0.02

Conductivity (µS/cm) 90 127 132 121 156 162 147 39 45 28 32 38 46

BOD (mg/L) <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2

Water flow at pool (m/s) 0.1-0.3 0.1-0.2 0.1-0.2 0.1-0.2 0.1-0.2 0.1-0.2 0.1-0.2 0.1-0.2 0.1-0.2 0.1-0.2 0.1-0.2 0.1-0.2 0.1-0.2

Water flow at riffle (m/s) 0.4-0.5 0.2-0.5 0.2-0.5 0.2-0.5 0.2-0.5 0.2-0.5 0.2-0.5 0.2-0.5 0.2-0.5 0.2-0.5 0.2-0.5 0.2-0.5 0.2-0.5

Sand (%) 55 5 5 5 5 5 5 5 5 5 5 5 5

Stone (%) 25 80 80 30 80 80 30 80 80 30 80 80 30

Mud (%) 30 5 5 2 5 5 2 5 5 2 5 5 2

Concrete (%) 0 10 10 63 10 10 63 10 10 63 10 10 63

Table 4.7 Abotic data for the Upper She Shan River (T1-

Upper stream section, T2 - middle stream section and T3 - Lower

stream section)

Aug-15Jul-15


Dec-14 Jan-15

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